diff --git a/filter/algebra/pix.php b/filter/algebra/pix.php
index 30c8e5969b7..564f9bee1e2 100644
--- a/filter/algebra/pix.php
+++ b/filter/algebra/pix.php
@@ -60,8 +60,11 @@
                 case "Darwin":
                     $cmd = "$CFG->dirroot/$CFG->texfilterdir/mimetex.darwin -e $pathname ". escapeshellarg($texexp);
                 break;
+                default:      /// To allow drop-in binaries for other platforms
+                    $cmd = "$CFG->dirroot/$CFG->texfilterdir/mimetex -e $pathname ". escapeshellarg($texexp);
+                break;
             }
-	    system($cmd, $status);
+            system($cmd, $status);
         }
     }